Methods and devices for determining the position and/or orientation of a spectacle lens on a mounting

Abstract

A spectacle lens which has permanent markings is mounted on a mounting, in particular a suction mounting. The apparent location of the permanent markings is detected on the spectacle lens with a detection device. Additionally, the spectacle lens is illuminated eccentrically with respect to an optical axis of the detection device using eccentric light sources. Reflections from the lights sources on the spectacle lens are likewise detected. On the basis of the detected reflections and the apparent location of the permanent markings, the position and/or orientation of the mounted spectacle lens are determined.

1 . A method for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the method comprising:
 detecting an apparent location of the permanent mark on the spectacle lens, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens;   eccentrically illuminating the spectacle lens with an eccentric light source;   detecting a location of at least one reflection of the eccentric light source on the spectacle lens; and   determining at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark and mark-independent additional information,   the mark-independent additional information including the location of the at least one reflection.   
     
     
         2 . The method as claimed in  claim 1 , wherein the holder is composed of an opaque material. 
     
     
         3 . The method as claimed in  claim 1 , wherein the holder is a suction holder. 
     
     
         4 . The method as claimed in  claim 1 , wherein detecting the apparent location of the at least one reflection comprises:
 repeatedly detecting the apparent location of the at least one reflection during a movement of the spectacle lens.   
     
     
         5 . The method as claimed in  claim 1 , wherein eccentrically illuminating comprises:
 eccentrically illuminating the spectacle lens with a plurality of eccentric light sources; and   generating a plurality of reflections.   
     
     
         6 . The method as claimed in  claim 5 , further comprising:
 alternately activating a respective eccentric light source or a group of eccentric light sources from the plurality of light sources.   
     
     
         7 . The method as claimed in  claim 1 , further comprising:
 detecting the apparent location of the permanent mark with light of a first wavelength; and   detecting the location of the at least one reflection with light of a second wavelength, wherein the spectacle lens has a higher absorption for the light of the second wavelength than for the light of the first wavelength.   
     
     
         8 . The method as claimed in  claim 1 , further comprising:
 detecting at least one of the apparent location of the permanent mark or the location of the at least one reflection from a plurality of observation directions.   
     
     
         9 . The method as claimed in  claim 1 , wherein determining the at least one of the position or the orientation of the spectacle lens further comprises:
 performing an iterative calculation.   
     
     
         10 . A computer program stored on a non-transitory storage medium and having a program code which, when executed on a processor, causes the method as claimed in  claim 1  to be carried out. 
     
     
         11 . The method as claimed in  claim 1 , wherein determining the at least one of the position or the orientation of the spectacle lens further comprises:
 performing an iterative calculation.   
     
     
         12 . A computer program stored on a non-transitory storage medium and having a program code which, when executed on a processor, causes the method as claimed in  claim 1  to be carried out. 
     
     
         13 . A method for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the method comprising:
 detecting an apparent location of the permanent mark on the spectacle lens from a plurality of observation directions, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens; and   determining the at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark determined from the plurality of observation directions and mark-independent additional information.   
     
     
         14 . The method as claimed in  claim 13 , further comprising:
 illuminating the spectacle lens with an eccentric light source; and   detecting a location of at least one reflection of the eccentric light source on the spectacle lens,   wherein the mark-independent additional information comprises the location of the at least one reflection.   
     
     
         15 . The method as claimed in  claim 14 , wherein detecting the apparent location of the at least one reflection comprises:
 repeatedly detecting the apparent location of the at least one reflection during a movement of the spectacle lens.   
     
     
         16 . The method as claimed in  claim 14 , wherein eccentrically illuminating comprises:
 eccentrically illuminating the spectacle lens with a plurality of eccentric light sources; and   generating a plurality of reflections.   
     
     
         17 . The method as claimed in  claim 16 , further comprising:
 alternately activating a respective eccentric light source or a group of eccentric light sources from the plurality of light sources.   
     
     
         18 . The method as claimed in  claim 14 , further comprising:
 detecting the apparent location of the permanent mark with light of a first wavelength; and   detecting the location of the at least one reflection with light of a second wavelength, wherein the spectacle lens has a higher absorption for the light of the second wavelength than for the light of the first wavelength.   
     
     
         19 . The method as claimed in  claim 14 , wherein determining the at least one of the position or the orientation of the spectacle lens further comprises:
 performing an iterative calculation.   
     
     
         20 . A computer program stored on a non-transitory storage medium and having a program code which, when executed on a processor, causes the method as claimed in  claim 19  to be carried out. 
     
     
         21 . A device for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the device comprising:
 a providing unit configured to provide a detected apparent location of the permanent mark on the spectacle lens;   a computing unit configured to determine the at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark and mark-independent additional information, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens;   at least one light source being arranged eccentrically with respect to an optical axis of a camera to eccentrically illuminate the spectacle lens; and   the camera having the optical axis and being configured to detect the apparent location of the permanent mark on the spectacle lens and to detect a location of at least one reflection of the at least one light source on the spectacle lens,   wherein the mark-independent additional information includes the location of the at least one reflection.   
     
     
         22 . The device as claimed in  claim 21 , further comprising:
 the holder configured to releasably secure the spectacle lens by suction, wherein the holder at least partly includes an opaque material.   
     
     
         23 . The device as claimed in  claim 21 , further comprising:
 at least two light sources arranged eccentrically with respect to the optical axis of the camera, wherein the computing unit is configured to activate the at least two light sources alternatively.   
     
     
         24 . The device as claimed in  claim 21 , wherein the camera is further configured to detect the location of the permanent mark with light of a first wavelength and to detect the location of the at least one reflection with light of a second wavelength, wherein the spectacle lens has a higher absorption for the light of the second wavelength than for the light of the first wavelength. 
     
     
         25 . The device as claimed in  claim 24 , further comprising:
 at least two light sources arranged eccentrically with respect to the optical axis of the camera, wherein the computing unit is configured to activate the at least two light sources alternatively.   
     
     
         26 . A device for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the device comprising:
 a providing unit configured to provide the detected apparent location of the permanent mark on the spectacle lens from a camera having an optical axis, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens; and   a computing unit configured to determine the at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark and mark-independent additional information,   wherein the camera having the optical axis is configured to detect the apparent location of the permanent mark from a plurality of observation directions.   
     
     
         27 . The device as claimed in  claim 26 , further comprising:
 the camera having the optical axis for detecting the apparent location of the permanent mark on the spectacle lens.   
     
     
         28 . The device as claimed in  claim 27 , further comprising:
 at least one light source being arranged eccentrically with respect to the optical axis of the camera to eccentrically illuminate the spectacle lens,   wherein the camera is further configured to detect a location of at least one reflection of the at least one light source on the spectacle lens, and wherein the mark-independent additional information comprises the location of the at least one reflection.   
     
     
         29 . The device as claimed in  claim 28 , further comprising:
 at least two light sources arranged eccentrically with respect to the optical axis of the camera, wherein the computing unit is configured to activate the at least two light sources alternatively.   
     
     
         30 . The device as claimed in  claim 24 , wherein the camera is configured to detect the location of the at least one reflection from a plurality of observation directions. 
     
     
         31 . The device as claimed in  claim 30 , further comprising:
 at least two light sources arranged eccentrically with respect to the optical axis of the camera, wherein the computing unit is configured to activate the at least two light sources alternatively.   
     
     
         32 . A device for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the device comprising:
 a providing unit configured to provide a detected apparent location of the permanent mark on the spectacle lens, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens; and   a computing unit configured to determine the at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark and mark-independent additional information,   wherein the computing unit is configured to determine the at least one of the position or the orientation of the spectacle lens on a basis of an iterative calculation of the at least one of the position or the orientation, and   wherein the computing unit is configured to carry out the iterative calculation on a basis of a holding characteristic, the detected apparent locations of the permanent mark, and the at least one detected reflection.   
     
     
         33 . A device for determining at least one of a position or an orientation of a spectacle lens mounted on a holder, the spectacle lens having a permanent mark, the device comprising:
 a providing unit configured to provide a detected apparent location of the permanent mark on the spectacle lens, the apparent location of the permanent mark being different from a real location of the permanent mark on account of light refraction by the spectacle lens;   a computing unit configured to determine the at least one of the position or the orientation of the spectacle lens on a basis of the apparent location of the permanent mark and mark-independent additional information; and   a holder, wherein the holder is configured to releasably attach the spectacle lens,
 wherein the mark-independent additional information includes a characterization of the attachment of the lens on the holder.